His holiness, Ethiopian Patriarch Paulos, arrived in Cairo Saturday to participate in the Gala celebrating the 40th year of the papacy of holiness Pope Shenouda III. A group of Holy Synod bishops welcomed Paulos. Sources in the church said that the Pope Shenouda would discuss Nile river issues with the patriarch. The sources added that the celebration, to be held Monday, will include religious choirs for Shenouda, and bishops will speak.